File Content Extraction 25.1
Filter SDK .NET Programming Guide

# Standardize Cell Formats

In Microsoft Excel you can format cell values. For example, the date "15/09/2021" could be formatted as "15 September 2021" or "2021-09-15". By default, File Content Extraction extracts cell values with formatting, as they would appear in Excel. If you prefer, you can configure File Content Extraction to standardize cell values.

To standardize cell formats

- In the .NET API, call the method `StandardizeCellFormats` on your session configuration. For example:

      session.Config().StandardizeCellFormats(true);

- In `formats.ini`, set the following parameter. (This is an alternative approach - you do not need to do this if you have configured this feature through the API).

      [Options]
      StandardizeCellFormats=TRUE

When this feature is enabled, File Content Extraction formats any cell where a number has been entered according to the following rules.

## Numbers

Numbers are printed to the maximum length entered–that is, the full number put into the cell, without any rounding. Negative numbers are printed with a dash in front of them (as opposed to, for example, bracket form).

The following table provides some examples.

Example | Formatted value | Output (standardized)
--- | --- | ---
Rounded number | 600 | 600.1
Scientific notation | 1.56E+04 | 15600
Fraction | 17/20 | 0.85
Percentage | 46% | 0.46

## Text

All text that is part of the format string is stripped, including currency symbols.

## Dates

All dates are printed in full ISO-8601 format (that is `YYYY-MM-DDTHH:MM:SS`). There are two exceptions to this rule:

- Cases where the date format contains a time delta (that is, `"[h]"`, `"[m]"`, or `"[s]"`). In this case, the time is displayed as an interval, which is the number of days (where a day is defined as a period of 24 hours). The time is printed in the ISO-8601 time interval form, for example `P1.234D`.

- Cases where the absolute value of the cell is less than `1.0`, and the date format contains only time components. In Excel, values between `0.0` and `1.0` correspond to the fictional date `1900-01-00`, and are used to express times without an associated date. For example:

  Value | Date format | File Content Extraction output
  --- | --- | ---
  `0.5` | `hh:mm:ss` | `12:00:00`
  `0.5` | `dd hh` | `1900-01-00 12:00:00`
  `1.5` | `hh:mm:ss` | `1900-01-01 12:00:00`
  `1.5` | `dd hh` | `1900-01-01 12:00:00`

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Version 25.1 | Last updated January 2025

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Product: File Content Extraction 25.1

Topic Title: Standardize Cell Formats